JP3583471B2 - Mounting structure and mounting method of the plate to the base - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a mounting structure and a mounting method of a plate-like body to a base, which can be suitably performed, for example, when mounting a wiring board to a housing.
[0002]
[Prior art]
FIG. 8 is an exploded perspective view showing a simplified structure of attaching a wiring board 31 to a base 32 according to the first prior art. At a corner of the base 32, a raised portion 33 formed by cutting and raising the base 32 is formed. At approximately the center of the raised portion 33, a screw hole 36 is formed from the outer surface of the raised portion 33 by so-called burring. That is, at the time of punching of the raised portion 33, a screw hole 36 is also drilled, and the screw hole 36 is threaded with a die or the like.
[0003]
In the base 32 configured as described above, the wiring board 31 is placed on the raised portion 33, and the screws 38 inserted through the insertion holes 37 formed in the wiring board 31 are screwed into the screw holes 36. The wiring board 31 is attached to the base 32.
[0004]
FIG. 9 is an exploded perspective view showing the second conventional technique in a simplified manner. The base 41 includes a rising piece 42 that is vertically raised by cutting and raising the base 41. The rising piece 42 includes a holding surface 44 for keeping the distance between the wiring board 43 and the base 41 constant, and an inverted L-shaped locking piece 45 extending from the holding surface 44.
[0005]
Correspondingly, an insertion hole 46 corresponding to the horizontal sectional shape of the locking piece 45 is formed in the wiring board 43. After fitting the locking piece 45 into the insertion hole 46, the wiring board 43 is attached to the base 41 by twisting the locking piece 45 in the arrow direction indicated by reference numeral 47.
[0006]
The third prior art is disclosed in Japanese Utility Model Laid-Open Publication No. 63-136396, FIG. 10 is an exploded perspective view showing the mounting structure in a simplified manner, and FIG. 11 is a sectional view for explaining the mounting procedure. The panel 51 includes a pair of parallel ribs 53 and 54 protruding from the panel 51. On one of the ribs 54 protruding from the panel 51, a resilient engaging claw 55 is extended so as to face the other rib 53. A locking hole 56 into which the engagement claw 55 is fitted is formed in the wiring board 52.
[0007]
As shown in FIG. 11 (1), after fitting the end of the wiring board 52 into the groove 57 between the ribs 53 and 54 of the panel 51, the lever 54 is used as a fulcrum and the principle of leverage is used. When the wiring board 52 is pressed in the direction indicated by reference numeral 58 as shown in (2), the engagement claws 55 bend in the direction indicated by reference numeral 59, and the locking holes 56 are formed as shown in FIG. To fit. Thus, the panel 51 is attached to the wiring board 52.
[0008]
[Problems to be solved by the invention]
In the first prior art described above, since the mounting of the wiring board 31 to the base 32 is performed using the screw 38, not only the number of parts and the number of assembling steps are increased, but also the burring process is performed on the base 32. And the number of processing steps also increases.
[0009]
Further, in the second conventional technique, an operation of twisting the locking piece 45 is required, which not only increases the number of assembling steps, but also makes it difficult to automate the assembling operation.
[0010]
Furthermore, the third prior art relates to the attachment of a flexible member such as the panel 51 to the wiring board 52, and it is very difficult to apply this technique when attaching the rigid wiring board 52 to a base. And it is also difficult to deal with the automation.
[0011]
An object of the present invention is to provide a mounting structure and a mounting method of a plate-like body to a base, which can reduce the number of parts and the number of assembling steps, and can cope with automation of an assembling operation.
[0012]
[Means for Solving the Problems]
The present invention is an attachment structure for attaching a plate-like body to a base,
A long hole and a positioning recess are formed in the plate-like body,
On the base, a support piece is erected,
The support piece includes a pair of holding pieces whose base ends are connected and the free ends are separated from each other, and a narrow connecting piece that connects the base end of the holding piece to the support piece. Provided,
On one of the holding pieces, a locking projection is formed facing the plate-like body,
In a state where the portion facing the long hole of the plate-like body is sandwiched between the holding pieces, the connecting piece is plastically deformed, and the locking projection is fitted in the recess. This is a structure for attaching a plate-like body to a base.
[0013]
Further, the invention is characterized in that the pair of holding pieces are formed in a V shape.
[0014]
Still further, in the present invention, the locking projection is formed near the free end of one of the holding pieces approaching the plate-like body when the connecting piece is plastically deformed,
The positioning recess is formed near a portion of the plate-shaped body facing the elongated hole.
[0015]
Further, according to the present invention, a supporting piece to be erected, a pair of holding pieces for holding the plate-like body, a connecting piece for connecting the supporting piece and each holding piece, and a locking projection provided on one of the holding pieces are formed. A mounting method for mounting a plate-like body on which a long hole and a positioning recess are formed on a base,
After sandwiching the portion facing the long hole of the plate-like body between the holding pieces, the connecting piece is plastically deformed, and at the same time, the locking projection is fitted into the positioning recess. This is how to attach to the base.
[0016]
[Action]
According to the present invention, a long hole and a positioning recess are formed in a plate-like body such as a wiring board so as to face a support piece erected from a base such as a housing. For example, a V-shaped holding piece is connected to the supporting piece via a connecting piece, and the holding pieces are formed such that the base ends are connected to each other and the free ends are separated from each other. Is done. The connecting piece has a small width and is plastically deformable, so that the holding piece can be angularly displaced with respect to the base. A locking projection is formed on one of the holding pieces.
[0017]
Attachment of the plate-like body to the base is performed by fitting the holding piece into the long hole, and sandwiching one short side of the long hole between the holding sides, and a peripheral portion of the long hole and the holding piece. Is pressed in the direction of the base to plastically deform the connecting piece in the direction of the base, whereby the plate-like body is held by the holding piece and the support piece, and the locking projection is fitted into the positioning recess. Then, the plate is attached to the base.
[0018]
Therefore, the number of parts and the number of work steps can be reduced without using separate parts such as screws, and assembly can be performed with a simple operation of simply pressing, which makes it easy to respond to automation. it can.
[0019]
Further, a locking projection is formed on one of the pair of holding pieces, and the locking projection is fitted into the positioning recess simultaneously with the plastic deformation of the connecting piece, so that the plate-like body is supported at one point by the locking projection. Therefore, the displacement of the plate-like body can be suppressed, and the mounting quality of the plate-like body can be improved.
[0020]
Furthermore, when the plate-like body is mounted, the locking projections are fitted into the positioning recesses, so that the positioning can be performed more securely, and the plate-like body can be firmly fixed, thereby further improving the mounting quality of the plate-like body. Can be.
[0021]
【Example】
FIG. 1 is an exploded perspective view showing a structure for attaching a wiring board 2 to a housing 1 according to a first embodiment of the present invention. The housing 1 serving as a base is made of a 0.8 mm to 1.0 mm thick sheet metal material having plasticity such as an electrogalvanized steel sheet. In the housing 1, support pieces 4 formed by cutting and raising the housing 1 are formed by sheet metal processing, facing the long holes 3 provided at the corners of the wiring board 2 which is a plate-like body.
[0022]
A narrow connecting piece 10 is formed on one end face 4a of the pair of end faces 4a and 4b of the supporting piece 4, and the connecting pieces 10 are connected to the base ends of the pair of holding pieces 7a and 7b. Is done. The holding pieces 7a and 7b are formed in a V-shape with their base ends connected to each other and their free ends moving away from each other. A recess 8 is formed between both end surfaces 4a and 4b of the support piece 4, and the holding piece 7b fits in when the connecting piece 10 is plastically deformed.
[0023]
When attaching the wiring board 2 to the housing 1, as shown in FIG. 2, one of the holding pieces 7 a is inserted into the long hole 3, and in the wiring board 2, near one short side 3 a of the long hole 3. Is locked between the holding pieces 7a and 7b. In this state, the periphery of the long hole 3 and the holding piece 7a are pressed in the direction of the housing 1. As a result, the connecting piece 10 is plastically deformed, and as shown in FIG. 3, one surface 2a of the wiring board 2 is pressed by the holding piece 7a, and the other surface 2b is supported by the end faces 4a, 4b.
[0024]
When the wiring board 2 is displaced in the direction of the arrow indicated by reference numeral 5, the other short side 3b of the long hole 3 comes into contact with the connecting piece 10 to prevent the holding piece 7a from falling out of the long hole 3. . In this manner, the wiring board 2 is held between the holding pieces 7a, 7b and the end faces 4a, 4b, and attached to the housing 1. At this time, the holding piece 7b fits into the recess 8 formed in the support piece 4. The above-described mounting operation is simultaneously performed on the support pieces 4 and the holding pieces 7a and 7b formed near the corners of the wiring board 2.
[0025]
As described above, in the present embodiment, the wiring board 2 is sandwiched between the holding pieces 7a and 7b formed on the support piece 4 formed by cutting and raising the housing 1, and only the connection piece 10 is plastically deformed. 2 can be attached to the housing 1, so that the number of parts and the number of work steps can be reduced as compared with the attachment structure in the related art, and it is possible to respond to automation. Further, since the wiring board 2 is supported by the end faces 4a and 4b, the wiring board 2 is hardly bent, and no local stress is applied during the plastic deformation.
[0026]
FIG. 4 is an exploded perspective view showing a mounting structure according to a second embodiment of the present invention. Since this embodiment is similar to the mounting structure of the first embodiment, the same reference numerals are used for the same components as those in FIG. In this embodiment, a quadrangular pyramid-shaped locking projection 11 is formed near the free end of the holding piece 7a so as to face the wiring board 2.
[0027]
As a result, the wiring board 2 is supported at one point on the one surface 2a side by the locking projection 11, so that displacement of the wiring board 2 due to vibration or the like can be suppressed, and better mounting quality can be obtained.
[0028]
FIG. 5 is an exploded perspective view showing a mounting structure according to a third embodiment of the present invention. Since the present embodiment is similar to the mounting structure of the first and second embodiments, the same reference numerals are used for the same components as those in FIGS. 1 to 3 and 4. In this embodiment, a positioning recess 12 corresponding to the locking projection 11 is formed on the outer peripheral edge of one short side 3a of the long hole 3 formed in the wiring board 2.
[0029]
As a result, the locking projection 11 is fitted into the positioning recess 12 with the plastic deformation of the connecting piece 10, and the wiring board 2 is positioned and mounted on the housing 1, so that the positioning accuracy can be improved and the vibration can be improved. For example, the displacement of the wiring board 2 due to such factors can be suppressed, and the mounting quality can be further improved.
[0030]
FIG. 6 is an exploded perspective view showing a mounting structure according to a fourth embodiment of the present invention. This embodiment is characterized in that a rising piece 15 is formed instead of the supporting piece 4 at one end 1a of the housing 1 in each of the above-described embodiments. The rising piece 15 is formed with a fitting recess 16 facing the supporting piece 4 erected at the other end 1 b of the housing 1. The width W1 of the holding piece 7a is substantially equal to the width W2 of the long hole 3, and the interval W3 between the free ends of the holding pieces 7a and 7b is formed substantially equal to the thickness W4 of the wiring board 2. .
[0031]
When attaching the wiring board 2 to the housing 1, one end 2 c of the wiring board 2 is fitted into the fitting recess 16, and then the holding piece 7 a is inserted into the long hole 3 on the other end 2 d side. The connecting board 10 is plastically deformed in the direction of the housing 1 so that the short side 3a is sandwiched between the holding pieces 7a and 7b of the support piece 4.
[0032]
Thereby, the number of assembling steps can be further reduced.
[0033]
FIG. 7 is a plan view for explaining a mounting structure according to a fifth embodiment of the present invention. This embodiment is suitably implemented in applications that require mounting accuracy, such as mounting the magnetic tape reproducing mechanism on a housing. This embodiment is similar to the fourth embodiment, and the same reference numerals are used for the same components. In the case 1 of the present embodiment, the support pieces 4 are formed by cutting and raising the case 1 at the four corners. From each support piece 4, a holding piece 7a and a holding piece 7b having the width W1 extend. The support pieces 4 are formed so that their thickness directions are parallel to each other on a diagonal line of the housing 1 and perpendicular to each other between adjacent support pieces 4.
[0034]
As a result, the displacement of the wiring board 2 in a direction parallel to each side of the housing 1 can be suppressed. It can be suitably used for mounting.
[0035]
In the first to fifth embodiments, the support pieces 4 and the rising pieces 15 are formed corresponding to the respective corners of the wiring board 2, and the wiring board 2 is supported at four points. However, it may be supported at the center, or at three or more points.
[0036]
【The invention's effect】
As described above, according to the present invention, for example, the connecting piece is plastically deformed in the direction of approaching the base in a state where the plate-like body is sandwiched between the V-shaped holding pieces. It is not necessary to use separate parts such as screws because it is sandwiched by the end face of the support piece, and the number of parts and the number of work steps can be reduced. It can be easily adapted to automation. Also preferably, of the pair of holding pieces, a locking projection is formed near the free end of the holding piece facing the surface opposite to the support piece with respect to the plate-like body while supporting the plate-like body, Since the plate-like body is supported at one point by the locking projection, displacement can be suppressed, and the quality of attachment of the plate-like body to the base can be improved.
[0037]
Still more preferably, a positioning recess corresponding to the locking projection is formed on the outer peripheral edge of the long hole, and the locking projection fits into the positioning recess when the plate-like body is attached to the base. Positioning can be performed more reliably, and mounting quality can be further improved.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a mounting structure of a wiring board 2 to a housing 1 according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a process of attaching the wiring board 2 to the housing 1.
FIG. 3 is a sectional view showing a process of attaching the wiring board 2 to the housing 1.
FIG. 4 is an exploded perspective view showing a mounting structure according to a second embodiment of the present invention.
FIG. 5 is an exploded perspective view showing a mounting structure according to a third embodiment of the present invention.
FIG. 6 is an exploded perspective view showing a mounting structure according to a fourth embodiment of the present invention.
FIG. 7 is a plan view illustrating a mounting structure according to a fifth embodiment of the present invention.
FIG. 8 is an exploded perspective view showing a simplified mounting structure of the first prior art.
FIG. 9 is an exploded perspective view showing a simplified attachment structure of the second prior art.
FIG. 10 is an exploded perspective view schematically showing a mounting structure according to a third conventional technique.
FIG. 11 is a cross-sectional view for explaining a mounting procedure of the prior art in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Housing 2 Wiring board 3 Long hole 4 Supporting pieces 7a, 7b Nipping piece 8 Depression 10 Connection piece 11 Locking projection 12 Positioning recess

Claims (4)

An attachment structure for attaching a plate-like body to a base,
A long hole and a positioning recess are formed in the plate-like body,
On the base, a support piece is erected,
The support piece includes a pair of holding pieces whose base ends are connected and the free ends are separated from each other, and a narrow connecting piece that connects the base end of the holding piece to the support piece. Provided,
On one of the holding pieces, a locking projection is formed facing the plate-like body,
In a state where the portion facing the long hole of the plate-like body is sandwiched between the holding pieces, the connecting piece is plastically deformed, and the locking projection is fitted in the recess. Mounting structure of the plate to the base. The mounting structure according to claim 1, wherein the pair of holding pieces are formed in a V shape. The locking projection is formed near the free end of one holding piece that approaches the plate when the connecting piece is plastically deformed,
3. The mounting structure according to claim 1, wherein the positioning recess is formed near a portion of the plate-shaped body facing the elongated hole. The support piece to be erected, a pair of holding pieces for holding the plate-like body, a connecting piece for connecting the supporting piece and each holding piece, and a base on which a locking projection provided on one of the holding pieces is formed, A mounting method for mounting a plate-like body in which a hole and a positioning recess are formed,
After the portion facing the long hole of the plate-like body is sandwiched between the holding pieces, the connecting piece is plastically deformed, and at the same time, the locking projection is fitted into the positioning recess. How to attach to the base.

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